Heater



Dec. 8, 1931.

G. OLSON ET AL HEATER Filed June 2o. 1927 2 Sheets-Sheet l Dec. 8, 1931.

G. OLSON ET AL 1,835,323

HEATER Filed June 20, 1927 2 Sheets-Sheet 2 PatenteclrDec. 8, 17931 I Uni EDS-ams GUNNER OLSON AND EUGENE H. KEI-IL, OF CHICAGO, ILLINOIS HEATER Application led .Tune 20,

Our invention relates to Water heating, and more speciiically to the type of Water heater adapted for installation as ani-auxiliary attachment in a boiler, such as the boiler of a hot Water or steam heating plant or a boiler for generating steam for power.

Among the objects and advantages of the invention may be Venumerated the improvement of this type of'heater Vparticularly with respect to convenience of installation, reedom from leakage, operating control, and cleaning and-repair. j

In the accompanying drawings, Y

Figure 1 is a sectional view of a complete f heater according to the invention;

Figure 2 is an outside end elevation ofthe same heater;

Figure 3 is a section on line '3-3 of Figure 1;

Figure 4 is a perspective vieu7 of the valve member g Figure 5 ure 1;

Figure 6 is a section .on line 6-6 of Figure 1; and Y Figure 7 is a plan vieW ot the valve member looking down from above.

In the embodiment of the invention selected for illustration,the cylindrical tube 10 receives a plug` 12 at its eXtreme inner end. rlhis plug is brazed or Welded in place as at 14. The tube is subdivided into tvvo passage- Ways by a central axial partition 16 in the form 01"' a flatplate. The sides of the tube vare formed With grooves 17 to receive the edges o'l the plate, which lits loosely enough to be capable owvithdravval for cleaning. T he protuberances on the outside, caused by bending the grooves 17`constitute deiiectors to'set'up advantageous currents inthe Water outside and improve the heat transfer. The

is a section on line 55 of Figplug 12 carries a flat iin 18 lying in a plane vertical to that of the partition 16. The end of the partition abuts the fin to position the partition se as toleave'a passageway for circulation oi the Water Vpast thev end of the partition. -A Y 1 v Y At its youter end the tube is brazed as at 20 to the main supporting head 22. This is done beforethe plate 16 is slipped in fplace,so that 1927.v Serial No. 200,209. j

the heating Will not draw the temper of the plate andy weaken it. The brazed'end of the Vtube and the outer end of the plate 16 termi# nate in the same vertical plane adjacent the 'face of the cylindrical valve member 24.

The valve member proper is provided with a. bottom inlet at V26 and a topfoutlet at 28 separated by a 'central partition 30, which, when the valve is inthe Wide open position of` Fig. 1, lies in a horizontal plane and abuts the end ofthe partition 16;

The valve member carries a stem 32, Which passes outwardly through the cover late 34 and a suitable packing 36. The hand e 38 by means of which the valve may be rotated is provided with a pointer 40` for the convenience of the operator. A lug 42 on the outer face of the valve member proper moves between fixed lugs 44 and 46 projecting in- Wardly from the adjacent face 'of the cover Y34 tolimit the rotation of the valve member to substantially 90 degrees; Referring now more particularlyto Figs. 4, 6 and 7, it Will be observed that the outlet opening 28 subtends a trifle less than 90 degrees of the circumference ofthe valve, and that the portion of it Which 'remains open last, as the valve moves to closed position, is V-shaped as at 48, rather than round. This results in a better control of the flow through the device because at small openings the angle of the sides at 48 is steeper thanthe circular arc indicated at 50 in Fig. 7 and provides a smaller change in the effective area of the opening for a given change in position. v v It Will also be observed that the inlet opening26 Vsubtends materially more than 90degrees and that its closingportion is also V- shaped as at 52. Because the toe ofthis V extends fartherthan degrees from the opposite side of the opening, a movement of the valve through 90 degrees in a` clockwise directionfrom theposition Vof Fig-2 will complete* `ly close the outletopening28 and still leave small apertureat theinlet. This eliminates any complete isola-tion of' the contents of the tube from the rest of the system..

he head 22 is provided With suitable tubular bossesat 54 and communicatingwith the -inlet and outlet, respectively. The lower and a partition in said tube abutting said valve partition when the valve is in open position.

7. A waterV heater comprising, in combina tion, a head casing having inlet and outletV passageways, and an `axial bore commuiiicating therewith and open at both ends; a cup shaped cylindricalvalve member rotatably mounted in said bore; said valve member .Y

9() degrees; and an axial operating shank` on said valve member extending out through o the cover. Y

S. A water heater comprising, in combination, a generally cylindrical tube having two inwardly concave grooves parallel `to and diametrically opposite each other with respect to the axis; a-support brazed to one end of said tube; a plug brazed in the other end of said tube; and a iiat partition plateV with its edges in said grooves; said plate being vfree fromthe effects of the heat of brazing.

9. A water heater comprising; in combination, a generally cylindrical tube having two inwardly concave grooves parallel to and` dia-metrically opposite each other with viespect'to the axis; a plug inone end of said tube; a partition plate with its edges in said grooves; and an abutment projecting from said plug to limit the movementof said partition. i v

10.` A water heater comprising; in combination7 a generally cylindrical tube hav ing two inwardly concave grooves parallel to and diametrically opposite each other with respect to the axis; a supporting head brazed to one end of said tube; a plug brazed in the other end of said tub-e; a flat partition plate removably inserted with its edges sliding in said grooves; and an abutment projecting from said plugto limit the inward movement of said partition.

11. A water heater' comprising a cylindrical heating tube; means for dividing said tube into two passages connected at one end of the tube; and a cylindrical valve coaxial with the tube and controlling the flow into and out of said tube. ,Y Y

12. A water heater comprising a cylindrical valve havingopposite'inlet and outlet openings; and heating means connected between said openings; said openings being shaped to have near closed position a smaller ratio of change of area to displacementthan in positions slightly wider. open.

18. A water heater comprisinga cylindrical vvalve Vhaving opposite iiiletand'V outlet openings; heating means connected between said openings; one of said openings closing before the other; and meansor limiting Y the `closing movement to av positionl with said outlet completely-.closed and said inlet still slightly open. 14C.l A water heater comprising return flow tubing; Vand Va- Vvalve controlling the flow through saidtubing; said `valve having an inlet and an outlet and at wide open .posiltion ,constraining-all flow to pass through saidV tubing; vsaid tubing and valve atinter-` mediate positions permitting some flow to proceed from said inlet to said outlet without passing through said tubing.`V

*15. A water heater comprising, in combination; a head casing; a tube brazed into said casing; said casing havingA a tubular portion` fittingV the end of. saidtube; an

annular iange spaced from the inner end of said tubular portion to abut the :outer face of a boiler plate; said ilange having holes opening through it at its inner surface closely Vadjacent to said tubular portion; said holes being inclined out and away from Vthe axis of said tube at an oblique angle; said l l u flange having enlargements around said Y holes; the outer surface of each enlargement being' finished perpendicular to the inclined portion of the hole through it; fastening bolts in said'holes; each bolt being bent to provide an axial portion andan inclined portion; means at thev end oftheaxial portionto overlie the inner surface of a supporting plate; andfastening means on the Y end of the inclined portion.

.16. A water heater comprising, in c'oinbina- Y tion, a one-piece generally cylindrical tube having opposite'portions bent out to. form longitudinal grooves; and a its. edges in said grooves.

17. A waterheater comprising, incombination, a one-piece generally cylindrical tube having opposite portionsbent out to form longitudinal grooves; and a partition plate removably inserted with its edgessliding in said grooves. i f i 18. A water heater comprising, inV combination; a horizontal tube; and deflectors ruiming longitudinallyalong the sides of partition with said tube to deflect a current of liquid descending over. the upper half of said tube and shield arising current of liquidV bathing the lower half ofsaid tube.

19. YA water heater comprising, in combination, a iianged head; and boltsrfor bolting said `head against the face of a boiler; saidbolts having irregularities of shape to abut cylindrical portions 'of fthe'head and keep the bolts from up.{V 20.A A water heater comprising; infcombinatioina cup shapedvalverhaving an open lid turning Vwhen drawing end and inlet and outlet openings in its side wall; a heating tube coaxial with said valve and communicating with said open end; and partition means operative when said valve is fully open to direct flow from said inlet opening to the remote end of said tube and back to said outlet; said partition means including a stationary portion mounted in said tube and a movable portion mounted in said valve to nieve therewith, said movable portion lying in the plane of said stationary portion when the valve is wide open, whereby in partially closed positions there is substantial leakage through said partition means.

2l. A water heater comprising, in combination, a cup shaped valve having an open end and inlet and outlet openings spaced therefrom; and heating tube means communicatin g with said open end.

22. A water heater comprising, in combination, a cup shaped valve having an open end and inlet and outlet openings spaced therefrom; a heating tube con'nnunieating with said open end; and partition means operative when said valve is open to direct flow from the said inlet opening to the remote end of said tube and back to said outlet; said partition means including a stationary portion mounted in said tube and a movable portion mounted in said valve to move therewith, said movable portion lying in the plane of said stationary portion when the valve is wide open, whereby in partially closed positions there is substantial leakage through said partition means.

23. A water heater comprising, in combination, a cup shaped valve having an open end and inlet and outlet openings spaced therefrom; heating tube means communicating with said open end; and partition means operative when said valve is open to direct How from said inlet opening to the remote end of said tube means and baci( to said outlet; said partition means including a movable portion mounted in said valve.

24. A water heater comprising, in combination, a cup shaped valve having an open end and inlet and outlet openings spaced therefrom; and a heating tube coaxial with said valve and communicating with said open end.

25. A water heater comprising, in combination, a cup shaped valve having an open end and inlet and outlet openings spaced therefrom; a heating tube communicating with said open end; and partition means operative when said valve is open to direct flow from said inlet opening to the remote end of said tube and back to said outlet; said partition means in partially closed positions permitting` substantial leakage.

2". Vater heating equipment comprising a boiler having a pressure retaining wall; said Wall having an aperture, a heater entered in said aperture; said aperture being of generally smooth contour except for small notches cut away at predetermined points;

and fastening bolts for said heater; said bolts n passing through said notches.

27. later heating equipment comprising a boiler having a pressure retaining wall; said wall having an aperture, a heater entered in said aperture; said aperture being of generally smooth contour except for small notches cut away at predetermined points; fastening bolts for said heater; said bolts passing through said notches; and a gasket between said wall and heater circumscribing the heater and the bolts.

A water heater comprising, in combination, a ianged head; and bolts for bolting said head against the face of a boiler; said bolts having outwardly bent portions on the outside of the boiler; and means other than said outwardly bent portions for keeping said bolts from turning when drawing up.

29. A water heater comprising, in combination, a iianged head; and bolts for bolting said head against the face of a boiler; said "i bolts having outwardly bent portions on the outside of the boiler, and means inside the beiler for keeping said bolts from turning when drawing up.

30. In a device of the cla-ss described; a boiler having an apertured plate; a casting positioned at the aperture, said casting h'aving a iiange overlying the edges of the aperture; a peripheral gasket forming a seal between said tlange and plate; bolts passing through flange and plate inside said gasket; and sealing gaskets at the outer ends of said bolts.

in testimony whereof, we have signed our names to this specification.

GUN N 1GB OLSON. EUGENE H. KEHL.

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